This hall is five bays wide and three bays deep. its roof is covered with yellow glazed tiles and is decorated with carved overhanging eaves and a gold-plated knob in the middle. in the center of the courtyard wall there is a gate named Tian Yi Men (One Heavenly Gate).
Inside the gate is a cypress with entwined branches. The glazed pavilion in the east of the courtyard was where silk was burnt during sacrificial rites.
In the Ming and the Qing Dynasties, the hall enshrined statues of Water God Zhenwu, one of the Taoist deities. During the Qinq Dynasty, every New Year an altar would be set up within Tian Yi Men (One Heavenly gate) for the emperor to burn incense and pay homage to the gods. During festivals, Taoist rituals were performed in this hall.